IEC 60906-3:1994
The International Electrotechnical Commission (IEC) has produced a standard for a system of plugs and socket-outlets for household and similar purposes in fixed and portable applications. Safety extra-low voltage (SELV) plugs and socket-outlets for 16 amps and 6, 12, 24, or 48 volts AC and DC. For use either indoors or outdoors.
The dimensions are as follows:
| Parameter | Value |
|---|---|
| Pin to pin distance | 7.0 ± 0.1 mm (0.276 ± 0.004 in) |
| Pin diameter | 3.500+0 −0.075 mm (0.1400+0 −0.0030 in) |
| Female sleeve | 4 mm (0.16 in) |
| Pin length | 10 mm (0.39 in) |
| Connector diameter | 19.4 mm (0.76 in) |
There are also Mini IEC connectors.
Read more about this topic: DC Connector